Shock Doctor Men's Boxer Brief W/Ultra Cup 5'' inseam boxer-style brief is constructed with supportive four way stretch, fabric that wicks moisture away from the skin. Flatlock seams, vented mesh cup pocket ULTRA CARBON FLEX CUP patented advanced multi-stage impact protection transfers shock away from vital areas while flex curve design and orbital gel pad maximizes comfort and fit ULTRA X-FIT CUP RETENTION SYSTEM integrated internal X-Pocket with dual X-Strap system secures the lower third of the bio-shaped cup pocket in a more natural position for closer cup fit during a wider range of motion when running, skating or crouching.